my multiple choice answers are different than the answer given

1. IGM Realty had a price ofS30, S30, $35, S33, and S25 at the end of the last five quarters. If IGM pays a dividend ofS2 at the end of each quarter a. What is the quarterly realized return on IGM? b. What is the annual realized return on IGM? 2. The following spreadsheet contains monthly returns for Cola Co. and Gas Co. for 2013. a. Using these data. estimate the average monthly return and volatility for each stock. b. Assume your portfolio consists of 30% of Cola Co and 70% ofGas Co., what is the average monthly return and volatility for your portfolio? (you can paste the table below to Excel)